@article{fdi:010087602,
  title = {{S}outheastern {A}rabian {S}ea {S}alinity variability : mechanisms and influence on surface temperature},
  author = {{A}khil, {V}. {P}. and {L}engaigne, {M}atthieu and {K}rishnamohan, {K}. {S}. and {K}eerthi, {M}. {G}. and {V}ialard, {J}{\'e}r{\^o}me},
  editor = {},
  language = {{ENG}},
  abstract = {{P}revious studies suggest that the winter surface freshening in the southeastern {A}rabian {S}ea ({SEAS}) contributes to the development of very high {S}ea {S}urface {T}emperatures ({SST}) thereby influencing the following summer monsoon onset. {H}ere, we use forced and coupled simulations with a regional ocean general circulation model to explore the {SEAS} {S}ea {S}urface {S}alinity ({SSS}) variability mechanisms and impact on the monsoon. {B}oth configurations capture the main {SEAS} oceanographic features, and confirm that the winter {SSS} decrease results from horizontal advection of {B}ay of {B}engal freshwater by the cyclonic circulation around {I}ndia during fall. {A} coupled model sensitivity experiment where salinity has no effect on mixing indicates that the salinity stratification reduces the {SEAS} mixed layer cooling by vertical processes by 3 degrees {C} seasonally. {S}alinity however enhances mixed layer cooling by a similar amount through concentrating negative winter surface heat fluxes into a thinner mixed layer, resulting in no climatological impact on {SST} and summer monsoon rainfall. {T}he {I}ndian {O}cean {D}ipole ({IOD}) is the main driver of the winter {SEAS} {SSS} interannual variability (r similar to 0.8). {S}alty anomalies generated in the western {B}ay of {B}engal during fall by positive {IOD} events are indeed transported by the cyclonic climatological coastal circulation, reaching the {SEAS} in winter. {B}y this time, warm {IOD}-induced {SST} anomalies in the {SEAS} are already decaying, and the {SEAS} {SSS} anomalies hence do not contribute to their development. {O}verall, our model results suggest a weak climatological and interannual impact of the {SEAS} winter freshening on local {SST} and following monsoon onset.},
  keywords = {{S}outheastern arabian sea ; {S}ea surface salinity ; {S}ea surface temperature ; {I}ndian ocean dipole ; {S}ummer monsoon ; {I}nterannual variability ; {OCEAN} {INDIEN} ; {ARABIE} {MER}},
  booktitle = {},
  journal = {{C}limate {D}ynamics},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[18 p.]},
  ISSN = {0930-7575},
  year = {2023},
  DOI = {10.1007/s00382-023-06765-z},
  URL = {https://www.documentation.ird.fr/hor/fdi:010087602},
}